Author: WEXA

Heat wave occuring from April 18 2026 to April 23 2026 at 18.0°N 44.0°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Saudi Arabia
  • Yemen

Duration: 6 days

Time span: April 18 2026 to April 23 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 3.1 °C
  • Mean temperature: 31.6 °C
  • Maximum temperature anomaly: 4.4 °C
  • Maximum temperature: 34.9 °C

Event center: 18.0°N 44.0°E

Area affected: 124910 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2026-Apr-18_to_2026-Apr-23_44.0_18.0

Heat wave occuring from April 18 2026 to April 25 2026 at 11.5°N 34.0°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Ethiopia
  • Sudan

Duration: 8 days

Time span: April 18 2026 to April 25 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 2.4 °C
  • Mean temperature: 35.4 °C
  • Maximum temperature anomaly: 3.3 °C
  • Maximum temperature: 37.3 °C

Event center: 11.5°N 34.0°E

Area affected: 51390 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2026-Apr-18_to_2026-Apr-25_34.0_11.5

Cold spell occuring from April 17 2026 to April 20 2026 at -36.5°S 149.5°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Australia

Duration: 4 days

Time span: April 17 2026 to April 20 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -4.5 °C
  • Mean temperature: 10.2 °C
  • Minimum temperature anomaly: -6.7 °C
  • Minimum temperature: 5.6 °C

Event center: -36.5°S 149.5°E

Area affected: 98396 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2026-Apr-17_to_2026-Apr-20_149.5_-36.5

Heat wave occuring from April 17 2026 to April 23 2026 at 37.0°N 141.5°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Japan

Duration: 7 days

Time span: April 17 2026 to April 23 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 3.4 °C
  • Mean temperature: 17.9 °C
  • Maximum temperature anomaly: 7.3 °C
  • Maximum temperature: 21.5 °C

Event center: 37.0°N 141.5°E

Area affected: 105925 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2026-Apr-17_to_2026-Apr-23_141.5_37.0

Heat wave occuring from April 17 2026 to April 21 2026 at 28.0°N 98.5°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • China
  • India
  • Myanmar

Duration: 5 days

Time span: April 17 2026 to April 21 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 4.1 °C
  • Mean temperature: 4.7 °C
  • Maximum temperature anomaly: 6.5 °C
  • Maximum temperature: 11.2 °C

Event center: 28.0°N 98.5°E

Area affected: 78171 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2026-Apr-17_to_2026-Apr-21_98.5_28.0

Cold spell occuring from April 16 2026 to April 18 2026 at 44.0°N 244.5°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • United States

Duration: 3 days

Time span: April 16 2026 to April 18 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -5.6 °C
  • Mean temperature: -4.2 °C
  • Minimum temperature anomaly: -9.3 °C
  • Minimum temperature: -9.5 °C

Event center: 44.0°N 244.5°E

Area affected: 50037 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2026-Apr-16_to_2026-Apr-18_244.5_44.0

Cold spell occuring from April 16 2026 to April 18 2026 at 49.0°N 79.5°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Kazakhstan

Duration: 3 days

Time span: April 16 2026 to April 18 2026

Statistics over entire affected area:

  • Mean temperature anomaly: -9.5 °C
  • Mean temperature: -2.4 °C
  • Minimum temperature anomaly: -14.6 °C
  • Minimum temperature: -8.2 °C

Event center: 49.0°N 79.5°E

Area affected: 58541 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2026-Apr-16_to_2026-Apr-18_79.5_49.0

Heat wave occuring from April 16 2026 to April 20 2026 at -27.0°S 127.5°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Australia

Duration: 5 days

Time span: April 16 2026 to April 20 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 5.0 °C
  • Mean temperature: 26.7 °C
  • Maximum temperature anomaly: 6.7 °C
  • Maximum temperature: 28.5 °C

Event center: -27.0°S 127.5°E

Area affected: 85409 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2026-Apr-16_to_2026-Apr-20_127.5_-27.0

Heat wave occuring from April 15 2026 to April 24 2026 at 1.5°N 47.0°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Somalia

Duration: 10 days

Time span: April 15 2026 to April 24 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 1.0 °C
  • Mean temperature: 29.2 °C
  • Maximum temperature anomaly: 1.8 °C
  • Maximum temperature: 30.9 °C

Event center: 1.5°N 47.0°E

Area affected: 114287 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2026-Apr-15_to_2026-Apr-24_47.0_1.5

Heat wave occuring from April 14 2026 to April 22 2026 at 15.0°N 40.5°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Eritrea
  • Ethiopia
  • Saudi Arabia
  • Sudan
  • Yemen

Duration: 9 days

Time span: April 14 2026 to April 22 2026

Statistics over entire affected area:

  • Mean temperature anomaly: 2.4 °C
  • Mean temperature: 30.5 °C
  • Maximum temperature anomaly: 5.8 °C
  • Maximum temperature: 39.1 °C

Event center: 15.0°N 40.5°E

Area affected: 575720 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2026-Apr-14_to_2026-Apr-22_40.5_15.0